電容觸(chu)(chu)摸(mo)屏的(de)漂(piao)移問題(ti)(ti)(ti)。在(zai)(zai)觸(chu)(chu)摸(mo)屏產品(pin)中，電容觸(chu)(chu)摸(mo)屏是(shi)我們常用(yong)的(de)觸(chu)(chu)摸(mo)屏方式，那么(me)，對于電容觸(chu)(chu)摸(mo)屏來說，其(qi)產品(pin)本身應用(yong)比較(jiao)廣泛，但是(shi)也存在(zai)(zai)著不少問題(ti)(ti)(ti)。而且(qie)由于現在(zai)(zai)科技的(de)發展程度(du)還無法完全解決觸(chu)(chu)摸(mo)屏產品(pin)在(zai)(zai)相(xiang)關原(yuan)理上出(chu)現的(de)問題(ti)(ti)(ti)，所以對于這些問題(ti)(ti)(ti)，目前還是(shi)普遍存在(zai)(zai)的(de)。
在這(zhe)里武漢公司要跟大家討論(lun)的(de)(de)是(shi)(shi)(shi)關于電(dian)容(rong)觸(chu)(chu)摸(mo)(mo)屏的(de)(de)"漂(piao)移"問題(ti)(ti)，這(zhe)個問題(ti)(ti)比較常見，也是(shi)(shi)(shi)我們在解決產品問題(ti)(ti)時主要考慮(lv)的(de)(de)方(fang)(fang)(fang)面。 電(dian)容(rong)觸(chu)(chu)摸(mo)(mo)屏的(de)(de)漂(piao)移問題(ti)(ti)介紹！ 武漢觸(chu)(chu)摸(mo)(mo)屏公司提示，電(dian)容(rong)觸(chu)(chu)摸(mo)(mo)屏本(ben)身實際是(shi)(shi)(shi)一套(tao)(tao)精(jing)密(mi)的(de)(de)漏電(dian)傳感器，帶手套(tao)(tao)的(de)(de)手不(bu)能觸(chu)(chu)摸(mo)(mo)，由于使用電(dian)容(rong)方(fang)(fang)(fang)式，導致(zhi)有漂(piao)移現象。電(dian)容(rong)觸(chu)(chu)摸(mo)(mo)屏和電(dian)阻觸(chu)(chu)摸(mo)(mo)屏都(dou)是(shi)(shi)(shi)電(dian)原(yuan)理(li)工作方(fang)(fang)(fang)式，電(dian)工作方(fang)(fang)(fang)式對于多(duo)點觸(chu)(chu)摸(mo)(mo)，不(bu)管是(shi)(shi)(shi)多(duo)少點，也不(bu)管是(shi)(shi)(shi)連續(xu)的(de)(de)還(huan)是(shi)(shi)(shi)不(bu)連續(xu)的(de)(de)都(dou)是(shi)(shi)(shi)取多(duo)點觸(chu)(chu)摸(mo)(mo)的(de)(de)中(zhong)心點判(pan)斷(duan)，因(yin)為電(dian)流疊加(jia)是(shi)(shi)(shi)分不(bu)出來誰(shui)是(shi)(shi)(shi)誰(shui)的(de)(de)，沒有辦(ban)法。
但是(shi)(shi)(shi)(shi)(shi)，目前來(lai)(lai)說(shuo)，電(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)(ping)仍然(ran)有不(bu)(bu)(bu)(bu)(bu)(bu)少問(wen)(wen)題(ti)(ti)存在(zai)(zai)。武(wu)漢(han)公司(si)信為(wei)(wei)，觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)(ping)目前的(de)(de)(de)(de)(de)(de)透明導(dao)電(dian)(dian)(dian)材(cai)料ITO--氧化金屬非(fei)常脆弱，觸(chu)(chu)(chu)摸(mo)(mo)幾下(xia)就會(hui)損壞，還(huan)不(bu)(bu)(bu)(bu)(bu)(bu)能(neng)(neng)直接(jie)用來(lai)(lai)作工(gong)作層。材(cai)料的(de)(de)(de)(de)(de)(de)問(wen)(wen)題(ti)(ti)一時(shi)還(huan)難(nan)以(yi)解(jie)決(jue)，只(zhi)好委曲求(qiu)全：在(zai)(zai)外部增(zeng)加一層非(fei)常薄的(de)(de)(de)(de)(de)(de)堅硬玻(bo)(bo)璃，它顯然(ran)是(shi)(shi)(shi)(shi)(shi)不(bu)(bu)(bu)(bu)(bu)(bu)能(neng)(neng)導(dao)電(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)，直流(liu)是(shi)(shi)(shi)(shi)(shi)不(bu)(bu)(bu)(bu)(bu)(bu)行了(le)(le)，改用高頻交流(liu)信號，靠人的(de)(de)(de)(de)(de)(de)手指頭（隔著薄玻(bo)(bo)璃）與工(gong)作面(mian)形成的(de)(de)(de)(de)(de)(de)耦合電(dian)(dian)(dian)容(rong)(rong)(rong)來(lai)(lai)吸走一個交流(liu)電(dian)(dian)(dian)流(liu)，這就是(shi)(shi)(shi)(shi)(shi)電(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)(ping)"電(dian)(dian)(dian)容(rong)(rong)(rong)"名字的(de)(de)(de)(de)(de)(de)由(you)來(lai)(lai)。 電(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)(ping)之(zhi)所以(yi)出現"漂(piao)(piao)移"的(de)(de)(de)(de)(de)(de)問(wen)(wen)題(ti)(ti)，是(shi)(shi)(shi)(shi)(shi)因(yin)為(wei)(wei)耦合電(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)(de)(de)(de)方式(shi)是(shi)(shi)(shi)(shi)(shi)不(bu)(bu)(bu)(bu)(bu)(bu)穩(wen)定(ding)的(de)(de)(de)(de)(de)(de)，它直接(jie)受(shou)溫(wen)度、濕度、手指濕潤程(cheng)度、人體體重(zhong)、地面(mian)干燥程(cheng)度影響，受(shou)外界大面(mian)積(ji)物體的(de)(de)(de)(de)(de)(de)干擾(rao)也(ye)非(fei)常大，帶來(lai)(lai)了(le)(le)不(bu)(bu)(bu)(bu)(bu)(bu)穩(wen)定(ding)的(de)(de)(de)(de)(de)(de)結果，這些都直接(jie)違背了(le)(le)作為(wei)(wei)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)(ping)這種(zhong)(zhong)坐標(biao)系統的(de)(de)(de)(de)(de)(de)基本要求(qiu)，不(bu)(bu)(bu)(bu)(bu)(bu)可避免的(de)(de)(de)(de)(de)(de)要產生(sheng)漂(piao)(piao)移，有的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)(ping)欲(yu)求(qiu)通過25點(dian)校準(zhun)法甚至96點(dian)校準(zhun)法來(lai)(lai)解(jie)決(jue)漂(piao)(piao)移問(wen)(wen)題(ti)(ti)，其實(shi)是(shi)(shi)(shi)(shi)(shi)不(bu)(bu)(bu)(bu)(bu)(bu)可能(neng)(neng)的(de)(de)(de)(de)(de)(de)，漂(piao)(piao)移是(shi)(shi)(shi)(shi)(shi)電(dian)(dian)(dian)容(rong)(rong)(rong)工(gong)作的(de)(de)(de)(de)(de)(de)這種(zhong)(zhong)方式(shi)決(jue)定(ding)的(de)(de)(de)(de)(de)(de)，即使(shi)(shi)是(shi)(shi)(shi)(shi)(shi)在(zai)(zai)控制器的(de)(de)(de)(de)(de)(de)單片程(cheng)序上(shang)利用動態計(ji)算(suan)和(he)(he)經驗值查(cha)表，也(ye)只(zhi)能(neng)(neng)是(shi)(shi)(shi)(shi)(shi)治(zhi)標(biao)不(bu)(bu)(bu)(bu)(bu)(bu)治(zhi)本。 其實(shi)，多點(dian)校準(zhun)法最早是(shi)(shi)(shi)(shi)(shi)大屏(ping)(ping)(ping)幕投影觸(chu)(chu)(chu)摸(mo)(mo)板使(shi)(shi)用的(de)(de)(de)(de)(de)(de)方法，目的(de)(de)(de)(de)(de)(de)是(shi)(shi)(shi)(shi)(shi)消除坐標(biao)對應(ying)的(de)(de)(de)(de)(de)(de)線(xian)xing失真，電(dian)(dian)(dian)容(rong)(rong)(rong)觸(chu)(chu)(chu)摸(mo)(mo)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)線(xian)xing失真也(ye)非(fei)常厲害(hai)，主要是(shi)(shi)(shi)(shi)(shi)因(yin)為(wei)(wei)電(dian)(dian)(dian)容(rong)(rong)(rong)屏(ping)(ping)(ping)的(de)(de)(de)(de)(de)(de)計(ji)算(suan)建(jian)立在(zai)(zai)四個電(dian)(dian)(dian)流(liu)量與觸(chu)(chu)(chu)摸(mo)(mo)點(dian)到四個電(dian)(dian)(dian)極的(de)(de)(de)(de)(de)(de)距離(li)成比例(li)的(de)(de)(de)(de)(de)(de)理想狀態上(shang)，實(shi)際(ji)由(you)于受(shou)環境電(dian)(dian)(dian)容(rong)(rong)(rong)、線(xian)路寄生(sheng)電(dian)(dian)(dian)容(rong)(rong)(rong)和(he)(he)不(bu)(bu)(bu)(bu)(bu)(bu)同人使(shi)(shi)用的(de)(de)(de)(de)(de)(de)影響。
